Lightning arrester



June 22 1926.

L. S. BRACH LIGHTNING ARHESTER Filed May 17, 1919 INVENTOI? m X ATTORIVEY Patented June 22, 1926.

LEON S. BEACH, 015 EAST ORANGE, NEW JERSEY.

LIGHTNING ARRESTER.

Application filed May 17, 1919.

This invention relates to lightning arresters, particularly to arrestersof the cartridge type, and one of the objects thereof is to provide newand improved means for connecting an arrester of this type with the lineterminals as well as with ground.

Another object of the invention is to provide a mounting for a cartridgeform of arrester, wherein a great economy of space is accomplished.

A further object of the invention is to provide adevice which iscompact, and is simple in construction, and which therefore can bemanufactured at a modicum of cost.

Other objects and aims of the invention, more or less specific thanthose referred to above, will be in part obvious and in part pointed outin the course of the following description of the elements,combinations, arrangements of parts and applications of principles,constituting the invention, and the scope of protection contemplatedwill be indicated in the appended claim.

In the accompanying drawings, wherein I have illustrated preferred formsof embodiment of my invention:

Figure l is an elevational view of one embodiment of my invention.

Figure 2 is a top plan view of the embodiment illustrated in Figure 1.

Referring now to the drawings, wherein similar reference charactersrefer to similar parts throughout the several views thereof, thereference numeral 1 denotes the base portion of the device, the samecomprising a block of insulating material, such as porcelain, or thelike. Extending upwardly from the base, and molded or otherwise fastenedtherein, are line terminals 2 and 3 respectively, one of said terminalsbeing located at each end of the base. Mounted upon raised portions 1and 5 provided upon each end of the base member 1, is a plate 6, theterminals 2 and 3 extending through apertures formed in this plate.Suitable clamp nuts 7 and 8 threaded upon the terminal members 2 and 15serve to hold plate '6 firmly in position upon the base member, eachterminalrbeing provided with suitable nuts and washers in dicated at 9,by means of which the line wires are attached thereto.

The plate 6, which is of cour6 fo e of Serial No. 297,745.

metal, midway of its length, is provided with an aperture adapted toreceive the theraded terminal 10 of an arrester 11. In the presentinstance the type of arrester illustrated is similar to that disclosedin my co-pending application Serial Number 297,- 7 46. That is to say,it is a vacuum type of arrester wherein a spark gap is providedinteriorly of an evacuated chamber between spaced electrodes, theterminal 10 being electrically connected with one electrode, and theterminal 12, at the upper end of the device, being connected with theother electrode.

The threading of the terminal 10 into the plate 6 mechanically, as wellas electrically. connects the arrester with said plate and thereforeconnects the same with the line terminals 2 and 3.

Referring to Figures 1 and 2 above described, it will be noted that theterminals 2 and 3 may be connected in the line, and the terminal 12 withground. It will also be obvious that this arrangement may be reversedand the line connected with the terminal 12 and either of the terminals9. and 3 connected with ground.

Thus it will be seen that I have provided a construction well adapted toattain each and every of the objects and ends above enumerated, in anexceedingly simple yet efiicient manner. The device is simple, compact,and the construction is such that the arresters may be easily andquickly detached from their supporting bases. Wh1le I have shown theline plates as adapted for screw threaded terminals, it will be obviousthat it lies within the scope of my invention to provide other attachingmeans to accommodate different forms of the cartridge type of arresters.

As many changes could be made in this construction without departingfrom the scope of the following claim, it is intended that all mattercontained in the above description or shown in the accompanying drawingshall be interpreted as illustrative only and not in a limiting sense.

Having thusdescribed my invetnion what claim as new and desire to secureby Letters Patent is:

A device of the class described, comprising a base formed of a block :15insulating material, a terminal carried by each end of said terminalsbeing adapted to be threaded into base a metallic plate connecting saidtermithe aperture of said plate, the other terminals and fastened toeach of them, said plate nal on said lightning arrester being adapted 10intermediate its ends being provided with to be connected with ground.

a threaded aperture, and a lightning ar- In testimony whereof Iafiix mysignature. rester having screw threaded terminals projecting from eachend thereof, one of said LEON S. BEACH.

